Contact printer



Fe'is), 17, 142. G. STALEY' CONTACT PRINTER Filed Jan. 8, 1940 3 Sheets-Sheet l G. w. STALEY 2,273,421

CONTACT PRINTER Feb., 17, 1942.

Filed Jan. 8, 1940 5 Sheets- Sheet 2 l I l Feb. 17, 1942. G. w. STALEY 2,273,421

CONTACT PRINTER Filed Jan. 8, 1940 3 Sheets-Sheet 3 7%; l k k .9 a 65 6% l M v 67 :1... J06

76 Q a J09 70 J08 51 MW $3 7 14 Sialg Patented Feb. 17, 1942 2,273,421 CONTACT PRINTER Guy W. Staley, Robbinsdale, Minn, assignor of fifty per cent to Peter Hauenstein, Minneapolis, Minn.

Applicaticn January 8, 1940, Serial No. 313,001

17 Claims.

This invention relatesto an improved contact printer and seeks, among other objects, to pro vide a machine of this character which will be highly efficient for making contact prints from candid camera film negatives and negatives of larger size. g I

Another object of the .invention is to provide a contact printer which is of such construction that it will be possible to print negatives in order or to skip undesirable negatives which are not to be printed. V

A further objectof the invention is to provide a contact printer employing mechanism which will insure that the negative and the paper will be'fed the proper distance for permitting the printing of prints of a predetermined size.

A further object of the invention is to provide a contact printer wherein the paper feeding means and the negative feeding means are independently operable so that proper adjustment of each or both may be accomplished as desired.

A further object of the invention is to provide a machine of this character which will be characterized by the utmost simplicity and which will be capable of use in a highly efiicient manner.

Further objects of the invention, not mentioned hereinbefore, will become apparent during the course of the following description.

Referring now to the drawings forming a part of my application:

Figure 1 is a perspective view of the complete machine, the figure being partialy broken away to show the printing light casing as Well as the pilot light,

Figure 2 is a side elevation of the machine, with the cabinet and the printing light casing, with pilot light thereon, removed,

Figure 3 is a top plan view of the structure shown in Figure 2,

Figure 4 is an end view,

Figure 5 is a vertical sectional view on the line 55 of Figure 2 and showing particularly the clutch mechanism,

Figure 6 is a detail plan view showing the film feeding mechanism, and

Figure 7 is a wiring diagram.

Referring now more particularly tothe accompanying drawings, wherein like numerals of reference will be seen to designate likeparts throughout the various views, the numerall indicates in general the cabinet or casing of my improved contact printer. The casing I is provided with a front wall 2, end walls 3 and a top having a slanting wall 4, said slanting wall being cut-away throughout the major portion of its area. The casing is preferably formed of light weight sheet metal. 1 Mounted on one of the end walls 3 are spaced stops 5 and 6, the purpose of which will be described in more detail hereinafter.

Mounted on the wall 4 and closing the cutaway portion thereof is a frame I which is preferably formed of light weight cast metal. The frame I has rectangular openings, centrally thereof, said rectangular openings being closed normally by panes 8 and 9. The frame 1 has apparatus mounted on both its upper and lower surfaces. There will first be described the mechanism for feeding the film from its roll to a position for contacting the sensitized paper, for effecting the contact printing process. At I0, there is shown a film holder or cradle which is formed of cast light weight metal and is of substantially H shape in top plan, having arcuate arms Hand I2 which are connected by an arm I3, which arm is secured to the frame near one edge, which, in Figure 1, is seen as a left edge, by a fastening device I4. The cradle If) is located substantially medially of the width of the frame and in longitudinal alinement with the panes 8 and 9. A guide member I5 is mounted on the frame adjacent the pane 8 and serves the purpose of guiding the film from the cradle II) to pass above the panes 3 and 9, said guide member being formed of wire or other suitable material. The film is adapted to be led into a'slot I6, also alined longitudinally with the panes 8 and 9, and over a sprocket drum H, which, as best seen in Figure 4 3, is rotatably mounted beneath the frame I,

said sprocket drum I'I being mounted on a shaft I8 which shaft has end portions journaled in bearings carried at the lower ends of brackets I9 and 2G. The shaft I8 is extended at one end and carries a ratchet wheel 2| which is, of course, fixedly mounted on the shaft. The ratchet wheel 21 is engaged by a pawl 22 which is pivotally mounted on a pawl lever 23. The pawl lever 23 has a hub 24 which is mounted to rock freely on the end of the shaft IS. A stop collar 25 limits movement of the hub 24, with the lever 23 thereon, out of engagement with the shaft I8. It will now be seen that shifting of the lever 23 will engage the pawl 22 selectively with the teeth of the ratchet wheel 2| so that, when said lever 23 is moved, said pawl will shift the ratchet wheel 2|, with the sprocket drum I'l. As the sprocket drum is shifted, the film from the roll on the cradle III will be caused to feed across the face of the frame and above the panes 8 and 9. It should be understood that the shifting movement of the sprocket drum will be such that, for each of said shifting movements, a predetermined length of film will pass above the panes. The predetermined length of film will, of course, determine the length of the print to be made.

In order to insure that the film will be retained in proper position on the drum I I, I provide a follower 26, said follower including arms 27 which are laterally spaced and are connected by a web 28. The follower 26 is mounted between cars 29 which are formed integrally with the frame 1 at one end thereof, said ears providing pivotal mounting for the follower and said follower being normally urged toward engagement with the sprocket drum by means of a suitable spring. A guard 30 is connected with the frame adjacent the follower.

In order to mount sensitized paper, to be fed above the pane 9 and the film, I provide a bracket which is shown generally at 3|. The bracket 31 includes a pair of spaced arms 32 and 33 which are bifurcated at their corresponding upper ends, as shown at 34. The bracket 3! is provided with extensions 35 which project forwardly and downwardly and provide mounting means for a guide r ller 36, which extends between the extensions. The arms 32 and 33 are, of course, adapted to support a roll of sensitized paper and the free end of said roll is to be trained beneath the guide roller 36 and above the film and the pane 9. The sensitized paper is, further, fed to pass above and in contact with a feed roller 31. The feed roller 3'! is shown clearly in Figures 2 and 3 of the drawings, and said feed roller has a portion extending through an opening 38 in the frame 7, said portion, of course, engaging the under side of the sensitized paper. The feed roller is rotated by means presently to be described for shifting the sensitized paper above the pane 9. Said sensitized paper is led from above the feed roller to pass beneath a cutting blade 39 so that it will be possible for the user to tear off a sensitized sheet, after a print has been placed thereon. As seen in Figure 1, the blade 39 is closely spaced with respect to a portion of the upper surface of the frame 1 so that the paper will be restricted to movement through a narrow slot and will thus be positioned for an easy tearing operation.

In order to insure that the paper from the roll carried on the bracket 3| will engage the feed roller 31, I provide a follower roller 40 which is supported by a yoke 4|, said yoke being formed with a shifting lever 42 and said yoke being mounted between cars 43 and 44 which are formed 4 integrally with the frame 1 at its forward edge. A coiled spring 45 surrounds the shaft 46, which pivotally mounts the yoke, and normally urges the roller 40 into engagement with the sensitized paper so that said paper will be retained in proper position on the feed roller. It should be understood that the yoke 4| may be shifted, by the lever 42, for positioning the follower roller 40 out of engagement with the paper during a loading operation. It should also be understood that the blade 39 may be readily removed from the frame whenever desired.

The feed roller 31 is mounted on a drive shaft 41 to rotate therewith. The drive shaft 41 has its inner and outer ends supported in brackets 48 and 49, which are longitudinally alined and are formed integrally with the frame 1. Fixedly mounted on the shaft 41 exteriorly of the bracket 49 is a driving ratchet wheel 50. The wheel 50 is adapted to be engaged by a pawl 51 which is pivotally mounted on a lever 52, said lever being rockably mounted on the end of the shaft 4! and limited against displacement therefrom by a washer 53 and a locking screw 54. It will be understood that shifting of the pawl 5| will cause rotation of the driving ratchet wheel and consequent rotation of the feed roller 31. The amount of rotation of the feed roller will, of course, depend upon the stroke of the pawl. The stroke of the pawl is regulated by an adjustable plunger 55 which carries a manually engageable knob 55 at its upper end. The plunger 55 is threaded through an integral sleeve 57, on the frame I and is adapted to engage a stop member 58 on the lever 52. A spring 59 has one end fastened to the frame and the other end fastened to the hub of the pawl lever 52. The spring 59 will normally urge the pawl to retracted position with the stop 58 in engagement with the end of the plunger 55.

A spring 60 is connected between a post 6| on the frame and the pawl lever 23 and serves the purpose of retaining the pawl 22 in retracted position with respect to the ratchet wheel 2| in the same manner as does the spring 59 retain the pawl 5| in retracted position with respect to the driving ratchetlvvheel 50. A stop member 62 is mounted on the under side of the frame 1 and engages, selectively, the shoulders of the ratchet wheel 2| for preventing the ratchet wheel from moving backward under the tension of the spring 60.

I will now describe the mechanism for effecting shifting movement of the feed roller 31 and of the sprocket drum l1, and also for effecting the actual contact printing. The mechanism includes a clutch which is shown generally at 63. The clutch 63 includes a clutch disk 64 which is mounted on a vertical shaft 65. The clutch disk is substantially circular in shape and includes driving ribs 66 and 61 located on the upper and lower surfaces, respectively, of said disk. The clutch disk 64 is slidable vertically on the shaft 55, and is freely rotatable thereabout. The disk 54 is connected to a lever 58 by a link 69, said lever 58 being mounted on a crank shaft 10 which is rotatably mounted on brackets H and 12, said brackets H and '12 being fastened to the under side of the frame 1 and extending downwardly in parallel spaced relation. The crank shaft 1D carries an operating crank 13 at its outer end and said operating crank includes an arm 14 which has an integral rib 15 thereon, said rib being engageable with the stops 5 and 6 on the wall 3 at each end of the movement of the crank. A handle 16 is, of course, carried by the crank for convenient manual engagement.

The clutch 63 includes clutch arms ll and 78, each of which is provided with a dog 19. The arm 11 is freely rotatable about the shaft and is connected to the lever 52 by means of a link 85 which has its ends bent to extend through openings formed in the arm and lever, respectively. Cotter keys 8i are extended through openings in the free ends of the link for the purpose of preventing accidental displacement of said link from its proper position. The arm 18 is connected to the lever 23 3y means of a link 32 which link is offset and otherwise shaped to engage the ends of the arm and lever, respectively. Cotter keys 83 retain the link 82 in proper operative position. In order to shift the clutch disk 64 for engaging either one or the other of the dogs 19, or both of them, for shifting one or the other of the arms, or both of said arms,

I provide clutch shifting mechanism, as best seen in Figures 3, 4 and 5 of the drawings. The clutch shifting mechanism includes a bell crank lever 84 which is mounted on a supporting bracket 85, rigidly secured to the under side of the frame 1, and said bell crank lever includes a split arcuate end 86 which movably receives the circumferential edgeof the disk 64. A pivot;bolt 8] pivotally mounts the bell crank lever 84 to the bracket 85. The bell crank lever 84 includes an apertured lug 88 which receives, pivotally, one end of .a link 89. The opposite end ofv the link 89 is con-. nected to a shifting lug 90 which is carried at the lower end of a shifting knob shaft 9|which shifting knob shaft is mounted. inxan integral boss 92 formed on the under side of the frame 1. A shifting knob 93 is mounted on the upper'end of the shaft 9| and has, a flat end portion 94 which is slidably engageable along an arcuate rib '95 which is formed integral with theiframe at its upper surface. 1 The shifting knob is adapted .to assume three positions. That is to say, whenthe knob is shifted to the left, for example, the link 89 willshift the bell crank lever 84 on the pivot'tll for raising the clutch disk 64 to such position that the dog '19 on the ,arm 11 will be engaged by the driving rib 66 upon rotation of said disk 64, said rotative movement being communicated from the lever 98, through thelink 69, to said disk upon shifting of the crank 13.

When the driving rib 66,,engages the dog 19 on the arm Thsaid arm will be shifted for transmitting shifting movement through the link 89 to the lever 52, for shifting said lever and transmitting rotative movement'to the driving ratchet wheel 50, through the pawl 5|. The feed roller will thus be rotated for feeding sensitized paper across the surface of the frame land above the pane 9. When the flattened portion 94 of the shifting knob 93 is swung to the right, the link 89 will transmit shifting movement through the bell crank lever 84 to the disk 64 for lowering said disk and thus disengaging the dog 19 on the arm 1'! from the driving rib 65, The driving rib 61, in this new position, will be positioned to engage the dog IS on the arm I8 so that, when the disk is rotated, as has been heretofore described, rotative movement will be communicated through the driving rib 91 and the dog 19 to said arm 18 and movement of said arm 18 will be transmitted through the link 82 to the pawl lever 23, for shifting said lever and transmitting rotative movement to the ratchet wheel 2|, through the pawl 22 Rotation of the-ratchet. wheel 2| will, of course, effect rotation of the shaft l9 and; consequently, rotation. of the sprocket drum H. Film, from the cradle I ll, will be pulled across the surface of the frame I at right angles to the movement'of the paper from the rollercarried by the bracket 3|, and said film will be trained overthe sprocket drum. 7 V p If the flattened portion of the knob 93 is placed midway between the ends of the rib 95, in a depression 96, for that purpose, the clutch disk 94 will be disposed intermediate the arms 11 and T8 in such a position that the driving ribs 65 and 61 will be engageable with both of the does 19. In this position, movement of the crank l9. with consequent rotative movement of the disk 64, will transmit swinging movement to the levers I the surface of" the frame and, of course, above the pane 9.

As best seen in Figure 1 of the drawings, there is mounted within the casing or cabinet a printinglight box 91 which is of polygonal shape and includes an upwardly projecting light tube 98 which is gradually reduced in size toward its upper end, the upper end of said tube being fastened beneath the pane 9 so that light from within the box will shine upwardly through the tube and through the pane. The box 91 carries an electric light bulb of conventional design and said bulb is fed by a cord 99 which is led from the cabinet and has a connecting plug I00 for connection to a suitable electric current source. The printing light box carries a bracket |0| which supports the socket I02 of a pilot lamp |03' which pilot lamp is clearly visible through the pane 8. The pilot lamp socket I02 is connected tothecord 99 by-means of a branch cord |M.- I a In order to control the current flow to the lamp I03 and the lamp within the box 91, I provide a circuit closer which includes a block of insulating material I05 which is mounted on the frame 1 at one side thereof. The insulating block I05 carries parallel switch springs I96 and H31 which extend downwardly and are adapted to be bridged by a bridging arm I08 which is' carried on an insulating block I09. The insulating block I09 is mounted on a lever ||D, which lever is fixedly mounted on the shaft 10.

To effect the actual printing operation, there is provided a printing plate III which is substantially rectangular in shape and of an area slightly greater than that of the area of the pane 9. The printing plate is provided with a cushioning lower surface H2 and said plate is mounted on an operating lever I I3 which-is pivotally mounted on a yoke H4, sai-dyoke being formed integrally on the upper surface of the fram 1 near the lower right-hand corner, as seen in Figure 1. The operating lever H3 carries a striking portion ||5 which is engageable by a plunger I I6 which extends upwardly through a sleeve on the frame I. The plunger carries a striking head I [8 which is formed with-a mushroom or tappet portion ||9, said tappet portion being engageable by a lug I20 which is carried on a hub |2|, the hub |2| being fixed to rotate with the shaft Ill. The plunger H6 is resiliently received within the striking head H8. That is to say,a sp'ring-|22' is position-ed between-the end of the plunger H6 and the inner surface of the mushroom or tappetportion I I'll. It will be seen that as the crank-I3 is moved rearwardly,-after having beenmoved forwardly for positioning the paper and film in proper respective operative positions, the lug I20 will engage the tappet portion 9 and will shift the plunger ||'6 upwardly for shifting the operating lever M3 on the yoke IA. The printing plate I will be forced against thepaper and the film and both said paper and film will be held against the pane 9. At the same time, the contact arm I98 will bridge the contact springs I06 and I01. for-closing the circuit to'the light within the printing light box so that the actual printing may take place. It should be understood that the contact springs Hi6 and H31 are connected in the circuit with the cord 99 in such a manner that the lamp within the printing light box will not .be illustrated. unless the crank is shifted for engaging the contact arm in bridging relation to the contact springs I06 and I01. The lamp I03 will be illuminated continuously, so long as the machine is connected to a current source, so that, by glancing through the pane B, the operator may observe the density of the negative and thus judge the time required for printing. A peep hole Ill in the plate or platen III enables the operator to tell whether or not the printing lamp is burning. It is desired to state that the density of the negative may be judged by the use of an exposure meter, of known construction, which will be mounted over the pane 8. It has been found desirable to equip my improved contact printers with exposure meters.

It is believed that the operation of my improved contact printer will be thoroughly understood from the foregoing. However, a brief summary of the operation is thought not to be out of place. After the film, such as that used with a candid camera or th like, has been properly placed on the cradle II), and is fed to the sprocket drum, and the sensitized paper is properly positioned in overlying relation to the film, above the pane 9, the crank 13 is shifted rearwardly for shifting the lever H3 and engaging the printing plate with the sensitized paper and film and at the same time closing the circuit to the light in the printing light box. A contact printing op eration will then take place. After this is done and it is desired to print further negatives, it is only necessary to shift the crank 13 forwardly, when movement will be transmitted to the sprocket drum and feed roller, in a manner described hereinbefore, for shifting both the sensitized paper and film for a predetermined desired distance so that another contact print may be made by merely shifting the crank rearwardly for engaging the printing plate with the paper and film and, of course, illuminating the light in the printing light box. In the event that it is desired to skip one of the negatives, it is only necessary to shift the knob 93 to such a position that the movement of the crank will not impart movement to the feed roller but will impart movement to the sprocket drum. The manner of doing this has been described hereinbefore. In this way, the sensitized paper will remain unmovable and the undesired exposure will be shifted along to pass over the sprocket drum, and a desired negative will be positioned beneath the sensitized paper for printing.

Attention is particularly directed to the fact that movement of the crank will move the paper and film the proper distance for permitting the printing of pictures on the sensitized paper and without danger of the overlapping of exposures.

It is also desired to call attention to the fact that, inasmuch as the film and sensitized paper may be moved either together or independently of each other, great flexibility of movement is possible.

It is thought that further description of the invention is unnecessary.

Having thus described the invention, what is claimed as new is:

1. In a contact printer, a cabinet, illuminating means in the cabinet and having an opening, a frame carried by the cabinet and having a transparent pane confronting the opening, means carried by the frame for supporting a roll of film to be exposed, means for engaging an end of said roll of film and shifting said roll across the surface of the frame above the transparent pane, means carried by the frame for supporting a roll of sensitized paper, means carried by the frame and engageable with the end of the lastmentioned roll for drawing said paper across the surface of the frame and above the transparent pane and film, means for forcing the sensitized paper and film against the pane and defining a backing for said paper whereby the printing of an exposure on the film upon the paper will take place upon illumination of the illuminating means, and means on the frame and movable to one position for operating both said third and fifth mentioned means whereby the film and sensitized paper will be simultaneously shifted above the pane, said last-mentioned means being movable to other positions for shifting either the film or the sensitized paper above the pane.

Zv In a contact printer, a cabinet, a printing light box mounted in the cabinet and having an opening, a lamp in the box, a frame carried by the cabinet and having transparent panes, one of said transparent panes confronting the opening, means carried by the frame for supporting film to be printed above the panes, means carried by the frame and engageable with a portion of the film for winding said film beneath the frame, means for supporting sensitized paper, means carried by the frame and engageable with a portion of the sensitized paper for shifting said paper across and above certain of the panes and the film, means carried by the frame and engageable with the paper for retaining said paper in proper position above the film, means carried by the cabinet and including a crank and being operable for shifting the film and paper engaging means for simultaneously drawing said film and paper across certain of the panes, a printing plate, an operating lever operatively positioning the printing plate above the paper and film, and means carried by the frame and operable by shifting of the crank for positioning the printing plate to engage the paper and film for effecting a contact printing operation, movement of said crank effecting illumination of the lamp in the printing light box.

3. In a contact printer, a frame, means carried by the frame for supporting film to be printed, said frame having transparent panes, said frame having a slot, at sprocket drum mounted beneath the slot, means rotatably mounting the sprocket drum and including a ratchet wheel, a pawl and a lever, a crank shaft carried by the frame, a clutch including a clutch disk, an arm, and means for shifting the clutch disk toward and away from the arm, means connecting the disk with the crank shaft, means connecting the arm with the lever, and a crank carried by the crank shaft, said crank being movable in one direction for shifting the crank shaft and disk whereby said arm will be shifted for moving the lever and ratchet wheel and the sprocket drum for winding film on said drum.

4. In a contact printer, a frame having a transparent pane, means carried by the frame for supporting sensitized paper, a feed roller carried by the frame, a shaft mounting the feed roller on the frame, said feed roller being engageable with the paper, a driving ratchet wheel carried by the shaft, means for shifting said ratchet wheel including a pawl, and a lever, a clutch including a clutch disk and an arm, means operatively connecting the arm with the lever, a crank shaft, a crank on the crank shaft, and means operatitely connecting the crank shaft with the clutch disk, said crank being shiftable in one direction for shifting the crank shaft and clutch disk whereby said lever will be shifted for engaging the pawl and shifting the driving ratchet wheel and the feed roller through an arc of predetermined length so that paper engaging the surface of the feed roller will be drawn across the surface of the transparent pane.

5. In a contact printer, a frame, means carried by the frame for supporting film, said frame having a transparent pane and a slot, a sprocket drum carried by the frame beneath the slot, a feed roller carried by the frame, means carried by the frame for supporting sensitized paper, said feed roller being engageable with the end of said paper for drawing said paper across the surface of the pane, a crank shaft carried by the frame, a crank on the crank shaft, a clutch including a disk and a pair of arms, means carried by the frame engageable with the disk for selectively connecting the disk with the arms, means operatively connecting the disk with the crank shaft, a shaft mounting the sprocket drum, a ratchet wheel carried by the shaft, a lever carried by the shaft, a pawl carried by the lever and engageable with the ratchet wheel, a link operatively connecting the lever with one of the arms of the clutch, a shaft rotatably mounting the feed roller, a driving ratchet wheel on the shaft, means for rotating said driving ratchet wheel including a lever and a pawl, a link operatively connecting the last-mentioned lever with the other of said clutch arms, and means carried by both of the ratchet wheels for normally retaining said ratchet wheels in a predetermined set position, said selective means being engageable for connecting the disk to one of said arms whereby movement of said crank shaft will cause shifting of the first-mentiond link and ratchet wheel for rotating the sprocket drum and winding eX- posure film thereon, shifting of the selective means in the opposite direction connecting the other of said arms with the crank shaft for imparting rotatable movement to the feed. roller for feeding paper above the surface of the pane, said selective means including an intermediate position for transmitting rotative movement to both of said arms for simultaneously shifting th sprocket drum and feed roller.

6. In a contact printer, a frame having a trans parent pane, a sprocket drum carried by the frame, a feed roller carried by the frame, means carried by the frame for supporting film to be exposed above said pane, means for supporting sensitized paper to pass above the film and pane, said feed roller engaging said paper for shifting said paper above the pane, a lamp beneath the pane, a printing plate, an operating lever supporting the printing plate and being movable for engaging the paper and film for effecting a contact printing operation upon illumination of the lamp, and means carried by the frame and operatively connected with the sprocket drum and feed roller for rotating said drum and roller through an arc of predetermined length whereby said film and paperwill be shifted for progressively positioning exposures and portions of unprinted paper in superposed position abovethe pane for contact printing operations.

7. In a contact printer, a frame, a sprocket drum carried by the frame, a feed roller carried by the frame, said frame having a transparent pane and a slot, said slot being disposed above the sprocket drum, means carried by the frame for supporting exposed films, said sprocket drum being engageable with a portion of said film for drawing said film above the surface of the pane,

means carried by the frame for supporting sensitized paper, said feed roller being engageable with a portion of said paper for drawing said paper above the pane and film, a follower roller carried by the frame and engageablewith the paper for forcing said paperinto engagement with the feed roller, a cutting blade carried by the frame adjacentlthe feed roller, a clutch carried by the frame, a crank shaft carried by theframe and operatively connected with the clutch, a handle carried by the crank shaft, means operatively connecting the clutch with the sprocket drum, and meansoperatively connecting the clutch with the feed roller, said handle being movable in one direction for rotating the sprocket drum and feed roller: for shifting the film and paper simultaneously above the transparent pane.

'8. In a contact printer, a frame having a transparent pane, a printing light box carried beneath the frame and having a lamp therein, a sprocket drum carried by the frame, means carried by the frame for supporting film, said film having an end engageable by the sprocket drum, a feed roller carried by the frame, means carried by the frame for supporting sensitized paper, said paper having an end engageable by the feed roller, means carried by the frame for shifting th feed roller and sprocket drum simultaneously for drawing paper and film above the pane, and means carried. by the frame and shiftable for engaging portions of the paper and film upon energization of the lamp for effecting a printing operation.

9. In a contact printer, a cabinet, a lamp in the cabinet, said cabinet having an opening, means for supporting film on the cabinet, means for supporting sensitized paper on the cabinet, and means carried within the cabinet and engageable with the paper and film and operable for shifting the paper and film simultaneously to a point above the opening for effecting a contact printing operation upon energization of the lamp, said last-mentioned means including a feed roller for the sensitized paper, a sprocket wheel for the film, a clutch, an arm associated with the clutch and operatively connected with the feed roller, an arm associated with the clutch and operatively connected with the sprocket wheel, a clutch disk having driving ribs engageable with the arms, and means for positioning th clutch disk for engagement with said arms.

' 10. In a contact printer, a cabinet, a frame carried by the cabinet, said frame having an opening, means carried by the frame for supporting film to be printed, means carried by the frame for supporting sensitized paper, light means carried by the cabinet beneath the opening in the frame, feeding means carried by the frame for shifting the paper and film above the opening, a crank shaft carried by the frame and operably connected with the feeding means, circuit closing means within the cabinet, a crank on the crank shaft, and a bridging bar. carried by the crank shaft, said shaft being movable in one direction for feeding film and paper to a set position above the opening and said crank being movable in the opposite direction for shifting the bridging bar for closing the circuit closing means whereby the light means Will be energized for effecting a contact printing operation.

11. In a contact printer, a frame having an opening, a transparent pane closing the opening, light means beneath the opening, a sprocket drum carried by the frame, a feed roller carried by the frame, means carried by the frame for supporting film, means carried by the frame for supporting paper, a clutch carried by the frame. a crank shaft carried by the frame, a crank on the crank shaft, means operatively connecting the clutch with the crank shaft, means operatively connecting the clutch with the sprocket drum, means operatively connecting the clutch with the feed roller, circuit closing means carried by the frame, a bridging bar carried by the crank shaft. a printing plate carried by the frame in overhanging relation to the opening, an operating lever carried by the printing plate, means pivotally mounting the operating lever on the frame, a plunger carried by the frame, a tappet head r d y he plunger, and a lug carried by the crank shaft and being engageable with the tappet, said crank being movable in one direction for simultaneously moving the feed roller and sprocket drum for drawing a portion of film and a portion of sensitized paper above the pane, said crank being movable in the opposite direction for engaging the printing plate with the paper and film and simultaneously illuminating the light means beneath the opening for effecting a contact printing operation.

12. In a contact printer as recited in claim 11, wherein the clutch is operative for connecting the clutch shaft with either the feed roller or the sprocket drum whereby either the sensitized paper or the film may be moved.

13. In a contact printer, a frame having an opening, light means beneath the opening, a sprocket drum carried by the frame, a feed roller carried by the frame, means carried by the frame for supporting film to be printed, means carried by the frame for supporting sensitized paper, a clutch carried by the frame, a shaft rotatably mounting the feed roller, a driving ratchet wheel on the shaft, a lever carried on the shaft, a pawl carried by the lever and engageable with the driving ratchet wheel, means carried by the frame and adjustable for limiting movement of the lever and pawl whereby shifting movement of the ratchet wheel may be limited, means operatively connecting the lever with the clutch, a crank shaft, a crank on the crank shaft, means operatively connecting the crank shaft with the clutch, a shaft mounting the sprocket drum, a ratchet wheel on the shaft, a lever on the shaft and having a pawl engageable with the lastmentioned ratchet wheel, means operatively connecting the last-mentioned lever with the clutch, circuit closing means carried by the frame, a bridging bar carried by the crank shaft, a printing plate, an operating lever supporting the printing plate, means pivotally connecting the operating lever to the frame, a plunger, a tappet carried by the plunger, and a lug carried by the crank shaft and engageable with the tappet, said crank being movable in one direction for shifting the clutch whereby the rotative movement of the sprocket drum and feed roller will be effected so that film and paper will be positioned lit) It U

above the opening in the frame, said crank being movable in the opposite direction for engaging the printing plate with the paper and film and simultaneously bridging the circuit closing means for illuminating the light means for effecting the contact printing operation.

1%. In a contact printer as recited in claim 13 including means mounted on the frame above the sprocket drum for retaining film on said drum during rotation thereof.

15. In a contact printer, a frame, a sprocket drum carried by the frame, means rotatably mounting the sprocket drum and including a shaft, a ratchet wheel on the shaft, a lever on the shaft, a pawl carried by the lever, a clutch carried by the frame and including a disk and a pair of arms, said disk having driving ribs and said arms having dogs engageable with the driving ribs, a shaft mounting the clutch on the frame, said disk being movable vertically of the shaft, a crank shaft carried by the frame, a link operatively connecting the disk with the crank shaft, a link cperatively connecting the ratchet wheel with one of the arms, a feed roller, a shaft rotatably mounting the feed roller, a driving ratchet wheel on the last-mentioned shaft, a lever on said shaft, a pawl on said last-mentioned lever, a link operatively connecting the last-mentioned lever with the other of said arms, and means carried by the frame and shiftable for shifting the clutch disk for engaging the driving rib with the dogs on the arms whereby rotative movement may be imparted to the sprocket drum and feed roller upon rotation of the crank shaft.

16, In a contact printer as recited in claim 15, wherein said last-mentioned means includes a bracket, a bell crank lever having an arcuate portion engageable with the disk, a shifting knob shaft, 2. link operatively connecting the shifting knob shaft with the bell crank lever, a shifting knob on the shifting knob shaft and having a flattened portion, and a rib on the frame and having depressions engageable by the flattened portion for retaining the shifting knob in a set position.

17. In a contact printer, a frame having a transparent pane, a film mounted on the frame and having a portion thereof extending above the surface of said frame and said pane, a supply of sensitized paper mounted on the frame and having a portion thereof extending across the surface of the frame above the pane, means for forcing the sensitized paper and film against the pane and defining a backing for said paper whereby the printing of an exposure on the film upon the paper will take place upon passage of light through the pane, and means on the frame and movable to one position for shifting both said film and said paper above the pane, said means being movable to other positions for shifting either the film or the paper above the pane.

GUY W. STALEY. 

